WO2019205941A1

WO2019205941A1 - Separating and melting system and method for waste lead grid in waste lead acid storage battery recycling

Info

Publication number: WO2019205941A1
Application number: PCT/CN2019/082106
Authority: WO
Inventors: 杨春明
Original assignee: 江苏新春兴再生资源有限责任公司
Priority date: 2018-04-28
Filing date: 2019-04-10
Publication date: 2019-10-31
Also published as: CN108342581B; EP3770286A4; EP3770286A1; AU2019260137B2; US20210230713A1; US11339456B2; CN108342581A; AU2019260137A1

Abstract

A separating and melting system and method for a waste lead grid in waste lead acid storage battery recycling, belonging to the field of comprehensive recycling of a waste lead acid storage battery. A drying drum (16) is mounted on an upper end of a smelting apparatus (14), a dust remover (1) is connected to the upper end of the drying drum (16) by means of a flue gas duct (2), a lead-containing grid pass box (4) is connected to the upper end of the drying drum, and a lead-containing liquid agitator (11) passes through the drying drum (16) into the smelting apparatus (14); a spiral feeder (15) is mounted on the smelting apparatus (14) and located in the drying drum (16), one end of a lead-containing grid barrier plate (5) is placed on the spiral feeder (15), and the other end is placed on an inner wall of the drying drum (16); an automatic ash acquiring machine (7) is mounted on the smelting apparatus (14), a material inlet end is located in the smelting apparatus (14), and a material outlet is connected to a material inlet of a lead ash transporter (8) by means of an ash discharging tube (6); a circulating water flushing pipe (9-8) on a copper-made terminal separator (9) is connected to a clean water outlet end of a circulating water treatment apparatus (13) by means of a conduit, and a lead mud agitator (3) is further connected to a lead mud tank (10).

Description

Separating and melting system and method for waste lead grid in waste lead acid battery recycling

Technical field

The invention relates to the field of comprehensive recycling of waste lead-acid batteries, and particularly relates to a separation and melting system and method for waste lead grid in waste lead-acid battery recycling.

Background technique

Lead-acid batteries are the most widely used and widely used batteries in the world, and they consume more than 85% of the world's total lead. China's lead-acid battery industry entered a period of vigorous development in the 1990s. With the development of the national economy, its market will continue to expand, with cars, motorcycles, electric vehicles, electricity, and communications as the main targets. In recent years, the development of smoke-free vehicles such as electric vehicles has led to a greater development of the lead-acid battery industry, and the greater the output of lead-acid batteries, the more lead-acid batteries that need to be renewed. From a point of view, lead-acid batteries are also the kind of battery that is the most harmful to the environment and human health. In the production and recycling of recycled lead, there are many sources of raw materials, and more than 90% are from waste lead-acid batteries. According to statistics, the number of waste lead-acid batteries produced in 2017 will reach 4 million tons.

The waste lead-acid battery consists of the following parts: 1. Waste electrolyte; 2, plate (positive plate, negative plate). The positive and negative poles in the battery are made of lead alloy and the surface of the positive plate is coated with metal lead powder. The surface of the negative plate is coated with lead oxide powder; 3, the battery casing is mainly made of PP, ABS and other plastics; 4, the partition is generally made of microporous rubber, PVC plastic separator and paper.

In the treatment of waste lead-acid batteries, the state promulgated the "Leading Conditions for Lead and Zinc Industry", "Clean Production Standard Lead-acid Battery Lead-Recycling Industry", "Technical Specifications for Waste Lead-Acid Battery Treatment Pollution Control", etc. It is necessary to perform crushing and sorting pretreatment on the waste lead-acid battery. The waste lead-acid battery is broken by the automatic crushing and sorting system to produce the following four components, waste lead grid, lead mud, waste plastic and separator paper, of which the waste lead grid accounts for about 25%. Such lead grids are mostly lead-based alloys containing valuable elements such as antimony and tin, which can be directly produced by low-temperature melting. Because the surface of the waste lead grid is often attached with a small amount of impurities such as lead oxide, the water content is as high as 10% or more. Can not directly enter the melting pot to melt or otherwise lead to explosion in the feeding process, affecting safe production, in addition, excessive moisture in the smelting, vaporization of the water also takes a lot of heat, which also increases the cost of smelting.

Due to the small amount of lead oxide and other impurities on the surface of the lead grid, the surface of the lead liquid melted during the production process will produce scum ash of lead oxide ash. Therefore, it is necessary to rely on the lead oxide which is artificially floated on the surface of the lead liquid. The residue ash is removed. At present, the worker uses the iron shovel with a leak hole to remove the scum ash from the smelting pot, and the removed lead ash is put into the ash hopper. Manual operation, workers must work in high temperature environment, labor intensity is high when fishing lead oxide ash, work efficiency is low, safety is low, dust is easily generated when collecting lead oxide ash, and the lead oxide ash is not clean thoroughly At the same time, because lead liquid is easy to produce lead steam, workers who collect lead oxide ash will suck this toxic gas into the body, which is easy to lead poisoning and seriously damages the health of workers.

At the same time, the copper terminal on the pole is difficult to be separated from the lead grid. When the lead grid is smelted at low temperature, it is lightly entered into the lead ash due to the high melting point, and is manually detected in such a huge waste lead-acid battery stack. The copper terminal is extremely unrealistic. If the copper terminal enters the next smelting process and is mixed into the crude lead, it not only wastes a lot of copper resources, but also brings a very high production cost to the refined lead copper.

Summary of the invention

The object of the present invention is to provide a separation and melting system and method for waste lead grid in waste lead acid battery recovery with high degree of automation and high heat utilization rate.

The technical solution of the present invention is achieved in that the present invention includes a separation melting system of a waste lead grid and a separation and melting method.

The separation and melting system of the waste lead grid includes: a dust remover, a flue gas duct, a lead liquid mixer, a lead grid net turnover box, a lead grid net baffle, an ash pipe, an automatic ash machine, a lead ash conveyor, copper Terminal separator, lead clay tank, lead mud mixer, copper collection box, circulating water treatment device, melting device, screw feeder and drying cylinder;

A drying cylinder is installed at an upper end of the melting device, and a dust pipe is connected to the dust collector at an upper end of the drying cylinder, and a lead grid turnover box is connected to the upper end of the drying cylinder, and a lead liquid mixer passes through the drying cylinder to the melting device. A spiral feeder is installed on the smelting device and is located in the drying cylinder. One end of the lead grid is placed on the spiral feeder and the other end is placed on the inner wall of the drying cylinder; the automatic ashing machine is installed in the smelting In the device, the feeding end is located in the melting device, and the discharge port is connected to the inlet of the lead ash conveyor through the ash pipe; the discharge port of the lead ash conveyor is located in the copper terminal separator, and the copper terminal separator is installed. On the lead clay tank; the circulating water flushing pipe on the copper terminal separator is connected to the clean water outlet end of the circulating water treatment device through a pipeline, and the sewage input end of the circulating water treatment device is connected to the lower part of the lead clay tank, in the lead clay tank A lead mud mixer is also connected to it.

The smelting device comprises: a pot cover, a melting furnace body, a melting pot, a siphon discharge tube and a lead-preventing valve; the melting pot is placed on the melting furnace body, the top of the melting pot has a pot cover, and the bottom of the melting pot has a siphon The lead pipe is discharged, and the siphon discharge pipe is used to discharge the lead liquid through the lead discharge valve; the drying cylinder, the screw feeder and the automatic dust collector are located on the pan cover.

The automatic ashing machine comprises a motor, a reducer, a coupling, a cylinder, a main shaft, a spiral blade, a ash inlet, a ash outlet, a ash collection plate, a liquid leakage hole, a bottom bearing seat and a bracket wheel; The front end of the cylinder body has a ash outlet, the rear end is provided with a ash inlet, a spindle is installed in the cylinder body, a spiral blade is mounted on the main shaft, the main shaft penetrates the cylinder body, and the rear end of the main shaft is connected with the bottom bearing seat, and the front end of the main shaft is connected. The shaft and the coupling are connected to the motor through a reducer; and the gray plate is connected in the cylinder at the position of the ash inlet;

The ash collecting plate is uniformly distributed with a liquid leakage hole, and the pore size thereof is ф 3-6 mm; the lead liquid is flowed back into the smelting lead pan, so that the lead liquid and the lead ash are separated;

A bracket wheel is connected to the bottom surface of the cylinder body, and the bracket wheel is located on the wall of the cylinder between the ash outlet and the ash inlet. The bracket wheel has wheels on the bracket foot to facilitate the entire hopper on the ground. mobile.

The spiral feeder is located at the lower end of the lead grid mesh baffle, and the two ends are placed outside the drying cylinder, the upper part of the spiral cylinder is opened into the material inlet, and the lower part is opened.

The lead grid mesh baffle is an elliptical thick 10-20MM high temperature resistant steel plate, which is connected around the inner wall of the drying cylinder, and the lower end is connected with the spiral feeder, and forms an angle of 30-60° with the surface of the melting pot. Uniformly venting holes with a pore size of ф2-6mm are convenient for the transfer of waste heat and heat to preheat the lead grid.

The copper component terminal separator comprises: an outer cylinder body, a drum screen, a transmission pulley, an ash inlet, a lead ash conveyor, a support wheel, a support bracket, a circulating water washing pipe, a material deflector, and a discharge port. Supporting wheel runway, copper screen, lead plaster water outlet, copper material discharge port, feed port support track, electric motor; at both ends of the rotary screen are connected with a roller runway, respectively, the discharge port support wheel Runway and feed port support track, the support track is a hollow ring and communicates with the inside of the drum screen, and there is a corresponding support wheel on the support track, the support wheel is mounted on the support bracket; A copper screen is connected to one end of the support rail, and the end of the copper screen is a copper outlet; a drive pulley is connected to one side of the feed runner rail, and the drive pulley is connected to the motor through the belt; The ash conveyor passes through the inlet ring of the feed ring and enters into the drum screen. There is a ash inlet at the other end of the lead ash conveyor; there is a material baffle on the inner wall of the drum screen; The outer cylinder has a lead-glued water outlet at the bottom of the outer cylinder, and a circulating water is connected to the outer cylinder The pipe is washed, and the circulating water is flushed to the rotating drum screen to spray and drain the circulating water.

The water circulation treatment device comprises: a clear water output pipe, a filter water return pipe, a clean water pump, a lead mud pump, a circulating pool, a filter press and a lead mud input pipe; the water inlet end of the clean water pump is connected with the circulating pool, and the clean water pump is The outlet end is connected with the circulating water inlet pipe, and a filter press is arranged above the circulating pool, and the output end of the filter press is connected to the circulating pool through the pressure filtration water return pipe; the input end of the filter press passes through the output end of the pipeline and the lead mud pump Connected, the lead mud pump input is connected to the lower part of the lead clay tank.

The separation and melting method comprises the following steps:

Step (1), crushing and sorting the waste lead-acid battery, and loading the sorted lead grid into the tote;

Step (2), using the high temperature flue gas of the smelting pot to dry and preheat the waste lead grid, controlling the water to be below 2%, and adding to the smelting pot for low temperature melting;

Step (3), using an automatic ash ash machine to separate the molten lead liquid from the scum ash, and transporting the lead scum ash to the copper component terminal separator;

Step (4), the separator is turned on, and the lead dross ash containing the copper component terminal is sprayed by the high-pressure circulating water, and the lead-acid ash adhered to the copper component terminal is washed away, and further moved forward by the material deflector. And discharging from the copper piece discharge port of the copper wire mesh to complete the separation of the copper component terminal and the lead ash;

In step (5), the purified lead liquid is sent to the heat-insulating lead package through the lead-discharge tube and sent to the next step to prepare the alloy.

The beneficial effect is that, due to the above scheme, the waste lead grid of the waste lead-acid battery crushing and sorting is loaded into the turnover box, and the moisture content of the lead grid is generally greater than 10%, and it is not suitable to directly enter the melting pot. Open the movable bottom plate at the bottom of the totes, the wet waste lead grid drops onto the lead grid barrier, the high temperature flue gas from the lead pan is preheated and dried by the lead grid, and the dried lead grid is in its own gravity. Under the action, it slides down the slope to the feeding end of the screw feeder at the bottom of the baffle plate, and starts the screw feeder to transport the lead grid to the molten lead pan. The feeding speed can be controlled according to the feeding condition to ensure the cutting. Uniformity is not blocked. After the waste lead grid is dried by residual heat, it enters the melting pot and melts at a low temperature. The temperature is controlled at 350-450 ° C. The impurities such as lead oxide attached to the surface of the lead grid and the copper terminal mixed therein are floating on the surface of the lead liquid due to the specific gravity. After the lead liquid level reaches a certain height, the mixer of the smelting pot is turned on, and an appropriate amount of slag removing agent is added to further separate the lead in the slag from the ash. When the lead oxide ash in the molten lead pan needs to be taken up, the automatic ash feeder 7 is put into the ash port of the mixer in the mixing shaft of the mixer, and the ash plane in the ashing machine and the pan is generally less than 45°, and the ash collecting device is opened. And the mixer, the ash is transferred into the ash device through the ash inlet through the ash collecting plate under the action of the stirring shaft rotation, and the spiral blade slowly transports the ash slag through the ash pipe to the lead ash conveyor to enter the copper terminal. Opening the separator, the lead ash containing the copper terminal is under the action of the material deflector, the lead plaster slowly moves to the front end of the rotary screen, and the high-pressure water spray of the circulating water rinse pipe is used to carry out the lead oxide ash. Flushing and rinsing off the lead oxide ash attached to the copper terminal, and the copper terminal on the rotating screen mesh is further moved forward by the material deflector, rinsed by the circulating water to the copper screen, and It is discharged from the copper outlet of the copper wire mesh and enters the copper collection box to complete the separation of the copper terminal and the lead ash; the flushing lime water flows through the rotary screen through the lead-glued water outlet into the lead-clay tank. Stirring by a mixer to form a lead sludge suspension, lead Pump into a filter press, lead mud cake moisture dehydrated to less than 10%, the water flows into the filter press recycling pool recycling.

The lead liquid in the molten lead pan is discharged from the lead pipe of the molten lead pan by a siphon discharge pipe and a lead valve to be used in a lead bag for use. The flue gas in the production process is introduced into the dust collector through the flue gas duct for dust removal and purification treatment, and the exhaust gas reaching the standard is caused by the fan to cause the chimney to discharge.

1. Fully utilize the high-temperature flue gas emitted from the molten lead pan to dry the lead grid net to ensure that the moisture content of the material in the pot is less than 3%, which effectively solves the problem that the feed of the lead grid net is increased when the feed is added to the lead frit. The problem ensures safe production, improves operational safety performance, realizes comprehensive utilization of waste heat, and has excellent energy saving effect;

2. The melting temperature is low, effectively retaining valuable metals such as antimony and tin in the lead grid, which reduces the production cost of the prepared alloy and saves resources;

3, can achieve continuous feeding, automatic ash, continuous lead, high degree of automation;

4. Effectively separate the copper terminal from the lead ash, and achieve efficient recovery of the copper terminal on the waste lead-acid battery; save copper resources, improve the purity of the recycled lead, use water as the sorting medium in the production process , water recycling, no fly ash, zero emissions, complete.

5. The whole device is operated under the negative pressure state, and the flue gas is pumped into the dust collector by the induced draft fan to purify and discharge the standard to protect the environment.

Advantages: The device has a simple structure, stable and continuous production process, high degree of automation, high heat utilization rate and energy saving.

DRAWINGS

Figure 1 is a structural view of the present invention.

Figure 2 is a structural view of the automatic ashing machine of the present invention.

Figure 3 is a structural view of a copper component terminal separator of the present invention.

Figure 4 is a side elevational view of Figure 3.

Figure 5 is a structural view of a melting apparatus of the present invention.

Figure 6 is a structural view of a water circulation treatment apparatus of the present invention.

Figure 7 is a structural view of the screw feeder of the present invention.

Figure 8 is a structural view of a lead grid barrier plate of the present invention.

In the figure, 1, dust collector; 2, flue gas duct; 3, lead liquid mixer; 4, lead grid net turnover box; 5, lead grid net baffle; 6, ash pipe; 7, automatic ash machine; 8, lead ash conveyor; 9, copper terminal separator; 10, lead clay tank; 11, lead mud mixer; 12, copper collection box; 13, circulating water treatment device; 14, smelting device; 15, under the spiral Feeder; 16, drying cylinder; 7-1, motor; 7-2, reducer; 7-3, coupling; 7-4, cylinder; 7-5, main shaft; 7-6, spiral blade; -7, into the ash port; 7-8, ash outlet; 7-9, gray board; 7-10, liquid leakage hole; 7-11, bottom bearing seat; 7-12, bracket wheel; 9-1 , outer cylinder; 9-2, rotary screen; 9-3, transmission pulley; 9-4, ash inlet; 9-5, lead ash conveyor; 9-6, roller; 9-7, roller Bracket; 9-8, circulating water flushing pipe; 9-9, material deflector; 9-10, discharge port supporting runway; 9-11, copper wire mesh; 9-12, lead stucco water outlet; -13, copper parts discharge port; 9-14, feed port support wheel runway; 9-15, electric motor; 14-1, pot cover; 14-2, melting furnace body; 14-3, melting pot; 14- 4, siphon lead ; 14-5, lead valve; 13-1, clean water output pipe; 13-2, filter water return pipe; 13-3, clean water pump; 13-4, lead mud pump; 13-5, circulating pool; -6, filter press; 13-7, lead mud input pipe.

detailed description

The technical solution of the present invention is further described below with reference to the accompanying drawings:

Embodiment 1: The separation and melting system of the waste lead grid includes: a dust remover 1, a flue gas duct 2, a lead liquid mixer 3, a lead grid net turnover box 4, a lead grid net baffle 5, a ash pipe 6, and an automatic Ash hopper 7, lead ash conveyor 8, copper terminal separator 9, lead clay tank 10, lead mud mixer 11, copper collection box 12, circulating water treatment device 13, smelting device 14, spiral feeder 15 and Drying cylinder 16;

A drying cylinder 16 is attached to the upper end of the melting device 14, and is connected to the dust collector 1 through the flue gas duct 2 at the upper end of the drying cylinder 16, and a lead grid turnover box 4 is connected to the upper end of the drying cylinder 16, and a lead liquid mixer 3 is provided. Passing through the drying cylinder 16 to the melting device 14; a screw feeder 15 is mounted on the melting device 14 and located in the drying cylinder 16, and a lead grid barrier baffle 5 is placed on the screw feeder 15 at one end, and the other end Laying on the inner wall of the drying cylinder 16; the automatic ashing machine 7 is installed on the smelting device 14, the feeding end is located in the smelting device 14, and the discharging port is connected to the inlet of the lead ash conveyor 8 through the ash discharging pipe 6; The discharge port of the lead ash conveyor 8 is located at the copper terminal separator 9, the copper terminal separator 9 is mounted on the lead clay tank 10; the circulating water rinsing pipe 9-8 on the copper terminal separator 9 is piped and circulated The fresh water outlet end of the water treatment device 13 is connected, and the sewage input end of the circulating water treatment device 13 is connected to the lower portion of the lead-clay tank 10, and a lead-mixer 11 is connected to the lead-clay tank 10.

The smelting device 14 includes: a pot cover 14-1, a smelting furnace body 14-2, a smelting pot 14-3, a siphon discharge tube 14-4, and a lead discharge valve 14-5; the smelting pot 14-3 is placed in the smelting On the furnace body 14-2, the top of the melting pot 14-3 has a pot cover 14-1, at the bottom of the melting pot 14-3 there is a siphon discharge tube 14-4, and the siphon discharge tube 14-4 passes through the lead valve 14 -5 outputs lead liquid; the drying cylinder 16, the screw feeder 15 and the automatic hopper 7 are located on the pan 14-1.

The automatic ashing machine comprises a motor 7-1, a speed reducer 7-2, a coupling 7-3, a cylinder 7-4, a spindle 7-5, a spiral blade 7-6, a ash inlet 7-7, The ash port 7-8, the ash plate 7-9, the liquid leakage hole 7-10, the bottom bearing block 7-11 and the bracket wheel 7-12; the front end of the cylinder 7-4 has a ash outlet 7 -8, the rear end is provided with a ash inlet 7-7, the barrel 7-4 is equipped with a spindle 7-5, the main shaft 7-5 is mounted with a spiral blade 7-6, and the main shaft 7-5 is inserted through the cylinder 7-4 The rear end of the main shaft is connected to the bottom bearing housing 7-11, the front end of the main shaft 7-5 is connected to the coupling 7-3, and the coupling 7-3 is connected to the motor 7-1 through the speed reducer 7-2; a ash collecting plate 7-9 is connected to the barrel 7-4 at the -7 position;

The ash collecting plate 7-9 is uniformly distributed with a liquid leakage hole 7-10, and the pore size thereof is ф3-6 mm; the lead liquid is flowed back into the smelting lead pan, so that the lead liquid and the lead ash are separated;

A bracket wheel 7-12 is connected to the bottom surface of the cylinder 7-4, and the bracket wheel 7-12 is located on the wall of the cylinder 7-4 between the ash outlet 7-8 and the ash inlet 7-7. There are wheels on the legs of the walking wheels 7-12 to facilitate the movement of the entire hopper on the ground.

The spiral hopper 15 is located at the lower end of the lead grid barrier baffle 5, and the two ends are placed outside the drying cylinder 16, the upper part of the spiral cylinder is opened into the material inlet, and the lower part is opened.

The lead grid barrier baffle 5 is an elliptical thick 10-20MM high temperature resistant steel plate, which is connected around the inner wall of the drying cylinder 16 at the lower end, and is connected to the spiral hopper 7 at the lower end, and is clipped to the smelting pot surface by 30-60°. The horn has a venting hole with a diameter of ф2-6mm, which is convenient for the transfer of residual heat of the flue gas to preheat the lead grid.

The copper terminal separator 9 comprises: an outer cylinder 9-1, a drum screen 9-2, a transmission pulley 9-3, a ash inlet 9-4, a lead ash conveyor 9-5, and a carrier 9- 6. Support roller bracket 9-7, circulating water flushing pipe 9-8, material deflector 9-9, discharge port support wheel runway 9-10, copper wire mesh screen 9-11, lead plaster water outlet 9-12 , copper piece discharge port 9-13, feed port support wheel runway 9-14, electric motor 9-15; at both ends of the rotary screen 9-2 are connected with a roller runway, respectively, the discharge port support wheel runway 9-10 and the feed port support wheel runway 9-14, the support wheel runway is a hollow ring and communicates with the inside of the drum screen, and there is a corresponding support wheel 9-6 on the support track, the support wheel 9-6 Installed on the bracket 9-7; a copper screen 9-11 is connected to the end of the discharge runner 9-10, and the end of the copper screen 9-11 is the copper outlet 9-13 A drive pulley 9-3 is connected to one side of the feed port carrier runway 9-14, and the drive pulley 9-3 is connected to the motor 9-15 through the belt; the lead ash conveyor 9-5 passes through the feed port holder The wheel raceway ring enters into the drum screen 9-2, and has a ash inlet 9-4 at the other end of the lead ash conveyor 9-5; material drainage on the inner wall of the drum screen 9-2 9-9; there is an outer cylinder 9-1 outside the drum screen 9-2, a lead stucco water outlet 9-12 at the bottom of the outer cylinder 9-1, and a circulating water flushing pipe connected to the outer cylinder 9-1. 9-8, the circulating water flushing pipe 9-8 sprays and drenches the circulating water to the rotating drum screen 9-2.

The water circulation treatment device includes: a clean water output pipe 13-1, a filter water return pipe 13-2, a clean water pump 13-3, a lead mud pump 13-4, a circulating water tank 13-5, a filter press 13-6, and Lead slurry input pipe 13-7; the water inlet end of the clean water pump 13-3 is connected to the circulating water tank 13-5, and the water outlet end of the clean water pump 13-3 is connected with the circulating water inlet pipe 13-1, above the circulating water tank 13-5 There is a filter press 13-6, the output end of the filter press 13-6 is connected to the circulating water tank 13-5 through the pressurizing water return pipe 13-2; the input end of the filter press 13-6 is passed through the pipeline and the lead mud pump 13- The output of the lead mud pump 13-4 is connected to the lower end of the lead clay tank 10.

The separation and melting method comprises the following steps:

Claims

A separation and melting system for waste lead grid in waste lead-acid battery recycling, characterized in that: the separation and melting system of the waste lead grid comprises: a dust remover, a flue gas duct, a lead liquid mixer, a lead grid net turnover box, and a lead Grid screen baffle, ash pipe, automatic ash hopper, lead ash conveyor, copper terminal separator, lead clay tank, lead mud mixer, copper collection box, circulating water treatment device, smelting device, spiral cutting And a drying cylinder; a drying cylinder is installed at an upper end of the melting device, and a dust duct is connected to the upper end of the drying cylinder through a flue gas duct, and a lead grid turnover box is connected to the upper end of the drying cylinder, and a lead liquid mixer is passed through the drying The tube is placed in the smelting device; a spiral hopper is installed on the smelting device and is located in the drying cylinder, and one end of the lead grid mesh baffle is placed on the spiral feeder, and the other end is placed on the inner wall of the drying cylinder; The dust machine is installed on the melting device, the feeding end is located in the melting device, the discharging port is connected to the inlet of the lead ash conveyor through the ash pipe; the discharging port of the lead ash conveyor is located in the copper terminal separator, copper Terminal separator installation On the lead clay tank; the circulating water flushing pipe on the copper terminal separator is connected to the clear water outlet end of the circulating water treatment device through a pipeline, and the sewage input end of the circulating water treatment device is connected to the lower part of the lead clay tank, on the lead clay tank A lead mud mixer is also connected.
The separation and melting system for waste lead grid in the waste lead-acid battery recycling according to claim 1, wherein the melting device comprises: a pot cover, a melting furnace body, a melting pot, a siphon discharge tube and Lead valve; the smelting pot is placed on the smelting furnace body, the top of the smelting pot has a pot cover, a siphon discharge tube is arranged at the bottom of the smelting pot, and a siphon discharge lead tube outputs lead liquid through a lead valve; the drying cylinder, The screw feeder and automatic hopper are located on the hood.
The separating and melting system for waste lead grid in the waste lead-acid battery recycling according to claim 1, wherein the automatic ash removing machine comprises a motor, a reducer, a coupling, a cylinder, a main shaft, Spiral blade, ash inlet, ash outlet, ash plate, liquid leakage hole, bottom bearing seat and bracket wheel; the front end of the cylinder body has a ash outlet, and the rear end has an ash inlet, and the cylinder body is installed. There is a main shaft, a spiral blade is mounted on the main shaft, the main shaft penetrates the cylindrical body, the rear end of the main shaft is connected with the bottom bearing seat, the front end of the main shaft is connected with the coupling, the coupling is connected with the motor through the reducer, and the barrel is connected at the position of the ash inlet. There is a gray board;

The ash collecting plate is uniformly distributed with a liquid leakage hole, and the pore size thereof is ф 3-6 mm; the lead liquid is flowed back into the smelting lead pan, so that the lead liquid and the lead ash are separated;

A bracket wheel is connected to the bottom surface of the cylinder body, and the bracket wheel is located on the wall of the cylinder between the ash outlet and the ash inlet. The bracket wheel has wheels on the bracket foot to facilitate the entire hopper on the ground. mobile.
The separation and melting system of the waste lead grid in the waste lead-acid battery recycling according to claim 1, wherein the spiral feeder is located at the lower end of the lead grid spacer and the two ends are placed in the drying cylinder. Externally, the upper part of the spiral cylinder opens the feed port, and the lower part opens the material discharge port.
The separation and melting system of the waste lead grid in the waste lead-acid battery recycling according to claim 1, wherein the lead grid mesh baffle is an elliptical thick 10-20MM high temperature resistant steel plate, and is connected around. On the inner wall of the drying cylinder, the lower end is connected with the spiral feeder, and forms an angle of 30-60° with the surface of the melting pot. The venting hole with a pore size of ф2-6mm is uniformly distributed on the surface to facilitate the transfer of waste heat and waste. Grid.
The separating and melting system for waste lead grid in waste lead acid battery recycling according to claim 1, wherein the copper terminal separator comprises: an outer cylinder, a drum screen, a transmission pulley, and a feed. Gray port, lead ash conveyor, support roller, roller bracket, circulating water washing pipe, material deflector, discharge port runner track, copper wire mesh, lead plaster water outlet, copper material discharge port, feeding The runway and the electric motor are connected to each other at both ends of the rotary screen, which are respectively connected to the discharge port and the feed port, and the support track is a hollow ring and a rotating drum. The inside of the screen is connected, and there is a corresponding supporting wheel on the supporting track, the supporting wheel is mounted on the supporting bracket; a copper screen is connected at one end of the running end of the discharging end, and the end of the copper screen is copper Feeding port; a driving pulley is connected to one side of the feeding port of the feeding wheel, and the driving pulley is connected with the motor through the belt; the lead ash conveyor passes through the inlet ring of the feeding ring, enters into the rotating screen, and is leaded The other end of the ash conveyor has an ash inlet; there is a material baffle on the inner wall of the drum screen An outer cylindrical body with an outer screen drum, the water lead stucco outlet at the bottom of the outer cylinder is connected to the circulating water irrigation tube outer cylindrical body, the circulating water to the irrigation tube rotating trommel spray, shower circulating water.
The separation and melting system of the waste lead grid in the waste lead-acid battery recovery according to claim 1, wherein the circulating water treatment device comprises: a clear water output pipe, a filter water return pipe, a clean water pump, Lead mud pump, circulating pool, filter press and lead mud input pipe; the water inlet end of the clean water pump is connected with the circulating water tank, the water outlet end of the clean water pump is connected with the circulating water inlet pipe, and the filter press is arranged above the circulating water pool, and the pressure filter The output end of the machine is connected to the circulating pool through a pressure filtration water return pipe; the input end of the filter press is connected to the output end of the lead mud pump through a pipeline, and the input end of the lead mud pump is connected to the lower part of the lead clay tank.
A method for separating a melting system of a waste lead grid in a waste lead-acid battery according to claim 1, wherein the separating and melting method comprises the following steps:

Step (1), crushing and sorting the waste lead-acid battery, and loading the sorted lead grid into the tote;

Step (2), using the high temperature flue gas of the smelting pot to dry and preheat the waste lead grid, controlling the water to be below 2%, and adding to the smelting pot for low temperature melting;

Step (3), using an automatic ash ash machine to separate the molten lead liquid from the scum ash, and transporting the lead scum ash to the copper component terminal separator;

Step (4), the separator is turned on, and the lead dross ash containing the copper component terminal is sprayed by the high-pressure circulating water, and the lead-acid ash adhered to the copper component terminal is washed away, and further moved forward by the material deflector. And discharging from the copper piece discharge port of the copper wire mesh to complete the separation of the copper component terminal and the lead ash;

In step (5), the purified lead liquid is sent to the heat-insulating lead package through the lead-discharge tube and sent to the next step to prepare the alloy.